A little off topic, but this is SO great...

I always wanted something like this. I save a lot of emails and so often the subject line is blank or has absolutely nothing to do with the content I'm interested in saving. If it's really important, I'll change the subject line, email it to myself, and then save it. Most of the time I just save it and then can never find it again. This free add-on to Thunderbird allows me to instantly change the subject line to something that makes sense. As it is now, I have hundreds and hundreds of emails that I'd have to read to find what I'm looking for or why I saved them. This is going to be so great and it's so easy to use. You just click on the Message Tab and then "Edit Subject Line" or better yet, you just type "E" while you're reading the email and a window pops up to let you change the subject line. It doesn't do everything that everyone wants (read feedback), but it sure works for me. This is going to multiply the usefulness of my email collection a thousand times. This is so great!

...Tiger
https://addons.mozilla.org/en-US/thunderbird/addon/edit-email-subject/?src=search